This paper presents a reliable digital watermarking technique that provides high
imperceptibility and robustness for copyright protection using an optimal discrete cosine …

The psychovisual technique has brought about significant improvement in pursuing image
analysis and image reconstruction. The psychovisual threshold can be utilized to find the …

Easy creation and manipulation of digital images present the potential danger of
counterfeiting and forgery. Watermarking technique which embeds a watermark into the …

With the era of rapid technology in multimedia, the copyright protection is very important to
preserve an ownership of multimedia data. This paper proposes an image watermarking …

JPEG is the prevailing compression algorithm used for digital images. Compression ratio
and quality depend on quantization tables that are matrixes of 64 integers. The quality of …

With increasing demand on digital images, there is a need to compress the image to
entertain the limited bandwidth and storage capacity. Recently, there is a growing interest …

A digital protection against unauthorized distribution of digital multimedia is highly on
demand. Digital watermarking is a defence in multimedia protection for authorized …

Because of the facility of accessing and sharing digital images through the internet, digital
images are often copied, edited and reused. Digital image watermarking is an approach to …

This paper proposes a blind and robust image watermarking technique using Discrete
Cosine Transform (DCT) for copyright protection on color images called BRIW-DCT. Each …

Quantisation table used in joint photographic experts group (JPEG) standard plays a major
role in the trade-off between the compression and quality of the image. Hence, finding a …